1: 1.) aq. HCl, NaNO2, 2.) aq. NaOH / 1.) 0 deg C, 2.) CH3OH, 0 - 5 deg C, 30 min 2: 48 percent / Zn, NaOH / ethanol; H2O / 2 h / Heating 3: 27 percent Spectr. / AlCl3, CH3NO2 / toluene / 7 h / Heating View Scheme

aluminium T=110°C;